A team has finished a game with 18-20-0 runs-hits-errors line 16 times since 1897, most recently Toronto Blue Jays on 13 June 2021. That is about one every 27,687 team-games.
Box score for the most recent one ↗
18-19-4 18-19-5 18-19-2 18-19-3 18-20-3 18-20-1 18-20-0 18-20-2 18-21-0 18-21-2 18-21-4 18-21-1 18-22-1
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes